1212433399 has 2 divisors, whose sum is σ = 1212433400. Its totient is φ = 1212433398.

The previous prime is 1212433381. The next prime is 1212433403. The reversal of 1212433399 is 9933342121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212433399 - 2⁹ = 1212432887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212433309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606216699 + 606216700.

It is an arithmetic number, because the mean of its divisors is an integer number (606216700).

Almost surely, 2^1212433399 is an apocalyptic number.

1212433399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212433399 is an equidigital number, since it uses as much as digits as its factorization.

1212433399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 37.

The square root of 1212433399 is about 34820.0143452010. The cubic root of 1212433399 is about 1066.3160932667.

The spelling of 1212433399 in words is "one billion, two hundred twelve million, four hundred thirty-three thousand, three hundred ninety-nine".